Euphoria.

It's not always we get the opportunity to think and be like "I wish I could have spent more time doing that exact same thing or being that exact same person". And that's because when we did that something or when we were that someone, we did it with someone. Someone very special. Someone who will always be close to our hearts no matter how distant we get from them. Someone who will always be with us until our time in this planet runs out.

Hello there, I'm the Earthian.

And we do come to realize that it's neither physically possible to be that person again, nor is it emotionally viable. They are in our memory for a reason, and that too, for a very good one.
And it's that sweet and sour, painfully pleasurable moments that make us who we are. The nostalgia, as cheesy as it sounds, is what we yearn for. It's what most of us live for, because our major source of happiness is our memories. Which is exactly the reason for why you should be surrounding yourself with the people who will leave such a mark in your life, such a beautiful mark. The reason for you to not chase random people in your life to satisfy the hunger of your lonliness. Because, sometimes, many times, it's yourself that is going to be your biggest companion. And you need to make sure, your time with yourself counts. And then when and if you find others who are just the ones for you, hold them, as tightly as possible for as long as possible. And when the time comes for you to let them go, you will be left hanging wanting more, but still will be filled with the most powerful feeling of Euphoria.

Lots of love, peace.